diff --git a/hadoop-mapreduce-project/CHANGES.txt b/hadoop-mapreduce-project/CHANGES.txt
index f33be9860ff..8a988258916 100644
--- a/hadoop-mapreduce-project/CHANGES.txt
+++ b/hadoop-mapreduce-project/CHANGES.txt
@@ -555,6 +555,8 @@ Release 2.1.0-beta - UNRELEASED
     MAPREDUCE-5298. Moved MapReduce services to YARN-530 stricter lifecycle.
     (Steve Loughran via vinodkv)
 
+    MAPREDUCE-5319. Set user.name in job.xml. (Xuan Gong via acmurthy)
+
 Release 2.0.5-alpha - 06/06/2013
 
   INCOMPATIBLE CHANGES
diff --git a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmitter.java b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmitter.java
index 9e5054de3c9..cee7a33d7e6 100644
--- a/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmitter.java
+++ b/hadoop-mapreduce-project/hadoop-mapreduce-client/hadoop-mapreduce-client-core/src/main/java/org/apache/hadoop/mapreduce/JobSubmitter.java
@@ -53,6 +53,7 @@ import org.apache.hadoop.mapreduce.protocol.ClientProtocol;
 import org.apache.hadoop.mapreduce.security.TokenCache;
 import org.apache.hadoop.mapreduce.split.JobSplitWriter;
 import org.apache.hadoop.security.Credentials;
+import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.authorize.AccessControlList;
 import org.apache.hadoop.security.token.Token;
 import org.apache.hadoop.util.ReflectionUtils;
@@ -354,6 +355,8 @@ class JobSubmitter {
     Path submitJobDir = new Path(jobStagingArea, jobId.toString());
     JobStatus status = null;
     try {
+      conf.set(MRJobConfig.USER_NAME,
+          UserGroupInformation.getCurrentUser().getShortUserName());
       conf.set("hadoop.http.filter.initializers", 
           "org.apache.hadoop.yarn.server.webproxy.amfilter.AmFilterInitializer");
       conf.set(MRJobConfig.MAPREDUCE_JOB_DIR, submitJobDir.toString());